Conn. Gen. Stat. § 13a-98a: Construction of frontage roads.

When, in the judgment of the Commissioner of Transportation, a frontage road will assist in the proper operation of a limited access highway, said commissioner may agree with authorized officials of the town in which such frontage road is or is to be located to construct such frontage road from appropriations made to the Department of Transportation, provided the town shall agree to assume the maintenance, responsibility, authority, liability and jurisdiction over and accept title to such frontage road upon completion of its construction. “Frontage road” as used in this section means a road designed to furnish access to property which otherwise would be isolated as a result of the construction of a limited access highway, or to preserve local road circulation.